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F28M35x Flash Erase and Programming Timing

Christian L
Intellectual 630 points

Hi all,


Sorry but I am unable to find information on the maximum times for erasing and programming sectors on the Concerto using F021 Flash API. Should be somewhere in the data sheet or TRM I suppose. Please help...


Best regards,

Christian

  • 0
    Intellectual 630 points

    Maybe the sector erase and programming (maximum) times have not been characterized and published by TI yet?

  • 0 in reply to Christian L
    Guru 192875 points

    Hi Christian,

    Christian L said:
    Maybe the sector erase and programming (maximum) times have not been characterized and published by TI yet?

    Sector as such is not mentioned but flash in whole is as follows for your device:

    http://processors.wiki.ti.com/index.php/C2000_Flash_Common_Issues/FAQs#Number_of_Erase.2FProgram_Cycles

    Regards,

    Gautam

  • 0 in reply to Gautam Iyer
    Intellectual 630 points

    Hi Gautam,

    I might have been unclear but I wasn't asking about endurance, that is, how many erase cycles etc the device can tolerate before bit-flips may occur.

    I am interested in knowing what the maximum time it will ever take me to erase- and then program one of the 64kB sectors using the F021 Flash API. From the FAQ you pointed me to, it seems that maybe the erase-time maximum is not really predictable and TI will not give you any upper bound. If so, then I would still at least like to know the max programming time.

    Best regards,

    Christian

  • 0 in reply to Christian L
    TI__Guru* 93785 points

    Christian,

    This is being worked on. Expect it to be published early next week.

    Hareesh

  • 0 in reply to Hareesh Janakiraman
    TI__Guru* 84295 points

    Christian,

    Out of the below options, let me know the operating frequency of the M3/C28x at which you want the erase/program times data.

    1) 75MHz/150MHz

    2) 100MHz/100MHz

    3) 75MHz/75MHz

    4) 60MHz/60MHz

    Thanks and regards,

    Vamsi

     

  • 0 in reply to Vamsi Gudivada
    Intellectual 630 points

    Hi Vamsi,

    1) please, 75/150.

    Thank you,

    Christian

  • 0 in reply to Christian L
    TI__Guru* 84295 points

    Hi Christian,

    Below are the program and erase times for M3/C28x at 75MHz/150MHz.

    Program time includes overhead of the Flash state machine but does not include the data transfer time (to load the code that uses Flash API to program the Flash, Flash API and the Flash data in to device RAM).  Program time assumes programming 144-bits at a time at the specified operating frequency.  Program time includes program verify by the CPU.  Note that the program time does not degrade with cycling.

    Erase time does not include the data transfer time.  Erase time includes Erase verify by the CPU.  

    Please let us know if you have any questions.

                                      Master Subsystem Flash parameters at 75MHz
    Parameter Flash size Typ Max Unit
     Program time 16 kB 145 290 ms
    64 kB 580 1160 ms
    128 data bits +
    16 ECC bits    		 40 300 us
    Parameter Flash size Typ Max Unit
    Erase time, for first 25 cycles 16 kB 25 50 ms
    64 kB 30 55 ms
    Parameter Flash size Typ Max Unit
    Erase time,
    at 50K cycles    		 16 kB 110 4000 ms
    64 kB 120 4000 ms
                              Control Subsystem Flash parameters at 150MHz
    Parameter Flash size Typ Max Unit
     Program time 16 kB 95 190 ms
    64 kB 380 760 ms
    128 data bits +
    16 ECC bits    		 40 300 us
    Parameter Flash size Typ Max Unit
    Erase time, for first 25 cycles 16 kB 25 50 ms
    64 kB 30 55 ms
    Parameter Flash size Typ Max Unit
    Erase time, 
    at 50K cycles    		 16 kB 105 4000 ms
    64 kB 110 4000 ms

    Thanks and regards,

    Vamsi/Adam H